Munificent 发表于 2025-3-28 17:35:25

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doxazosin 发表于 2025-3-28 18:46:21

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鲁莽 发表于 2025-3-29 02:16:52

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promote 发表于 2025-3-29 03:25:45

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两种语言 发表于 2025-3-29 07:44:57

Logic and Set Theoryhow a few very important mathematical objects such as functions and relations can be formed from sets. Just as we have chosen to build mathematics using set theory, we will build set theory using logic.

expeditious 发表于 2025-3-29 13:02:26

Goodstein’s Theoremment that it is hard to believe it is true. Second, while the theorem is entirely about . integers, Goodstein’s proof uses . ordinals. Third, 37 years after Goodstein’s proof appeared, L. Kirby and J. Paris proved that the use of infinite sets is actually ..That is, this is a theorem of arithmetic t

香料 发表于 2025-3-29 15:38:43

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outskirts 发表于 2025-3-29 22:33:08

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无能性 发表于 2025-3-30 01:41:46

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干涉 发表于 2025-3-30 07:05:09

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查看完整版本: Titlebook: An Outline of Set Theory; James M. Henle Book 1986 Springer-Verlag New York Inc. 1986 Finite.calculus.cardinals.mathematics.ordinal.set th